Chengdu Huaxin Cemented Carbide Co., Ltd. imakhazikika pakupanga kwamankhwala CHIKWANGWANI masamba(Yaikulu ya polyester staple fibers). Masamba a ulusi wamankhwala amagwiritsa ntchito ufa wapamwamba kwambiri wa tungsten carbide wokhala ndi kulimba kwambiri.Tsamba la simenti la carbidezopangidwa ndi zitsulo zazitsulo zachitsulo zimakhala ndi kuuma kwakukulu ndi kukana kuvala, ndipo zimakhala ndi kutentha kwabwino komanso kukana dzimbiri. Tsamba lathu limatenga njira imodzi yokha yopangira sayansi, moyo wautumiki wa mankhwalawa umachulukitsidwa nthawi zopitilira 10, sipadzakhala kusweka, kuchepetsa nthawi yopumira, ndikuwonetsetsa kuti m'mphepete mwake muli oyera komanso opanda ma burrs. Mitundu ya fiber yomwe tidapanga yathandizira kwambiri kupanga kwamakasitomala! Tungsten carbide mankhwala CHIKWANGWANI masamba makamaka ntchito kudula CHIKWANGWANI CHIKWANGWANI zosiyanasiyana CHIKWANGWANI akanadulidwa, galasi CHIKWANGWANI (akanadulidwa), zopangidwa ndi anthu CHIKWANGWANI kudula, mpweya CHIKWANGWANI, hemp CHIKWANGWANI, etc.
Kodi Nsalu za Polypropylene ndi Chiyani: Katundu, Momwe Zimapangidwira ndi Kuti?
yolembedwa ndi Gulu Lothandizira la Sewport • Meyi 25, 2022
Kodi Nsalu ya Polypropylene N'chiyani?
Nsalu ya polypropylene ndi mawu omwe amagwiritsidwa ntchito pofotokoza nsalu iliyonse yomwe imachokera ku thermoplastic polymer polypropylene. Pulasitiki yamtunduwu ndi gawo la gulu la polyolefin, ndipo si polar komanso pang'ono crystalline. Pafupi ndi polyethylene, polypropylene ndi pulasitiki yachiwiri yomwe imapangidwa kwambiri padziko lonse lapansi, ndipo imagwiritsidwa ntchito kwambiri pakuyika, udzu, ndi mitundu ina yazinthu zogula ndi mafakitale kuposa kupanga nsalu.
Pulasitiki yamtunduwu idapangidwa poyambilira ndi bungwe la ku America la Phillips Petroleum mu 1951. Akatswiri a zamankhwala Robert Banks ndi J. Paul Hogan anali kuyesa kupeza mafuta kuchokera ku propylene, ndipo mwangozi anapanga polypropylene. Ngakhale kuti kuyesaku kunkawoneka ngati kulephera, kunadziwika mwamsanga kuti gulu latsopanoli likhoza kukhala lofanana ndi polyethylene mu ntchito zambiri.
Sizinafike mpaka 1957, komabe, kuti polypropylene idapangidwa kukhala chinthu choyenera kupanga zambiri. Mu 1954, katswiri wa zamankhwala wa ku Italy Giulio Natta ndi mnzake waku Germany anakwanitsa kupanga chinthuchi kukhala chopopera cha isotactic, ndipo bungwe la ku Italy la Montecatini linayamba mwamsanga kupanga mankhwalawa kuti azigwiritsa ntchito malonda ndi ogula.
Polypropylene poyambirira idagulitsidwa pansi pa dzina la "Moplen," ndipo dzinali likadali chizindikiro cholembetsedwa ndi bungwe la LyondellBasell. Komabe, ndizofala kwambiri kupeza chinthu chomwe chimatchedwa polypropylene kapena "polypro" mwachidule.
Deckchair yokhala ndi denga ndi gulaye mu nsalu ya polypropylene mu imvi ya nkhunda
Pamene kugwiritsiridwa ntchito kwa polypropylene kunakhala kochulukirachulukira muzinthu zingapo zogula ndi mafakitale, zinadziwika pang'onopang'ono kuti pulasitiki yamtunduwu imasonyezanso kuthekera ngati nsalu. Nsalu ya polypropylene ndi nsalu yopanda nsalu, zomwe zikutanthauza kuti imapangidwa mwachindunji kuchokera kuzinthu popanda kufunikira kwa kupota kuluka. Phindu lalikulu la polypropylene ngati nsalu ndi luso lake losamutsa chinyezi; nsalu iyi singathe kuyamwa chinyezi chilichonse, ndipo m'malo mwake, chinyezi chimadutsa munsalu ya polypropylene kwathunthu.
Mkhalidwe umenewu umalola kuti chinyezi chomwe chimatuluka povala chovala cha polypropylene chisasunthike mofulumira kwambiri kusiyana ndi chovala chosunga chinyezi. Choncho, nsaluyi ndi yotchuka mu nsalu zomwe zimavala pafupi ndi khungu. Komabe, polypro imakonda kuyamwa ndi kusunga fungo la thupi ikagwiritsidwa ntchito ngati zovala zamkati, komanso imasungunuka pakatentha kwambiri. Nsalu yosungunuka ya polypro imatha kupsa kwambiri, ndipo nkhaniyi imapangitsanso kuti musamatsuke nsaluyi pa kutentha kwambiri.
Nsalu ya polypropylene ndi imodzi mwa ulusi wopepuka kwambiri wopangidwa, ndipo imagonjetsedwa modabwitsa ndi ma asidi ambiri ndi alkalis. Kuphatikiza apo, matenthedwe amafuta amtunduwu ndi otsika kuposa ulusi wambiri wopanga, zomwe zikutanthauza kuti ndizoyenera kuvala nyengo yozizira.
Beige ndi White Basket Woven Polypropylene Upholstery Nsalu
Kuphatikiza apo, nsaluyi imalimbana kwambiri ndi abrasion, komanso imalimbana ndi tizilombo ndi tizirombo tina. Chifukwa cha mawonekedwe ake odziwika bwino a thermoplastic, ndikosavuta kuumba pulasitiki ya polypro kukhala mawonekedwe ndi mawonekedwe osiyanasiyana, ndipo imatha kusinthidwa ndikusungunuka. Pulasitiki iyi nayonso sivuta kwambiri kupsinjika.
Komabe, polypro imadziwika kuti ndi yovuta kuyika utoto ikapangidwa, komanso zimakhala zovuta kuumba nsalu iyi kukhala mitundu yosiyanasiyana. Nsalu iyi imatha kuwonongeka ndi UV, ndipo sichimamatira bwino ku latex kapena epoxies. Monga nsalu zina zonse zopangira, nsalu ya polypropylene imakhalanso ndi vuto lalikulu pa chilengedwe.
Kodi Nsalu za Polypropylene Zimapangidwa Bwanji?
Monga mitundu yambiri ya mapulasitiki, polypro imapangidwa kuchokera kuzinthu zomwe zimachokera kumafuta a hydrocarbon monga mafuta amafuta. Choyamba, propylene ya monomer imachotsedwa mumafuta osakhazikika mu mawonekedwe a gasi, ndipo monomayi imayikidwa panjira yotchedwa chain-growth polymerization kuti ipange polymer polypropylene.
Ma propylene monomers ambiri akalumikizidwa palimodzi, pulasitiki yolimba imapangidwa. Kuti apange nsalu yogwiritsira ntchito, utomoni wa polypropylene uyenera kusakanikirana ndi mapulasitiki osiyanasiyana, okhazikika, ndi zodzaza. Zowonjezera izi zimalowetsedwa mu polypro yosungunuka, ndipo chinthu chomwe mukufuna chikapezeka, pulasitiki iyi imatha kuloledwa kuziziritsa kukhala njerwa kapena ma pellets.
Zipolopolo kapena njerwazi zimasamutsidwa kufakitale yopangira nsalu, ndipo amazisungunula. Nthawi zambiri, polypropylene iyi imapangidwa kukhala mapepala, kapena ikhoza kuloledwa kuziziritsa mu nkhungu. Ngati mapepala apangidwa, ulusi wopyapyalawu amadulidwa mumpangidwe womwe akufuna ndikusokedwa kapena kumamatira kuti apange zovala kapena matewera. Njira zosiyanasiyana zopangira zimagwiritsidwa ntchito popanga polypropylene kukhala zinthu zosavala.
Kodi Nsalu ya Polypropylene Imagwiritsidwa Ntchito Bwanji?
Nsalu ya polypro imagwiritsidwa ntchito kwambiri pazovala zomwe zimafunikira kutengera chinyezi. Mwachitsanzo, pulasitiki yamtunduwu imagwiritsidwa ntchito kwambiri kupanga mapepala apamwamba a matewera, omwe ndi zigawo za matewera omwe amakhudza khungu. Pogwiritsa ntchito polypropylene pa gawo ili la diaper, zimatsimikiziridwa kuti palibe chinyezi chomwe chidzakhalabe chokhudzana ndi khungu la mwana, zomwe zimachepetsa mwayi wopanga zidzolo.
Nsalu iyi yosawomba imasamutsa chinyezi yapangitsanso kukhala nsalu yotchuka yopangira zida zanyengo yozizira. Mwachitsanzo, zopangira izi zidagwiritsidwa ntchito popanga zovala zamkati ndi malaya amkati omwe adagwiritsidwa ntchito m'badwo woyamba wa US Army's Extended Cold Weather Clothing System (ECWCS). Zinapezeka kuti zovala zopangidwa kuchokera ku nsaluyi zimathandizira chitonthozo cha asilikali m'nyengo yozizira, koma zovuta za nsalu za polypro zachititsa kuti asilikali a United States asinthe ku nsalu zamakono za polyester kwa Generation II ndi Generation III ECWCS machitidwe.
Nthawi zina, nsalu za polypropylene zitha kugwiritsidwanso ntchito kupanga zovala zamasewera, koma zovuta zingapo ndi pulasitiki yamtunduwu zapangitsa kuti mitundu yatsopano ya polyester ikhale yotchuka kwambiri pakugwiritsa ntchito. Ngakhale kuti nsaluyi imakhala yotulutsa chinyezi ndi yofunika kwambiri pamasewera, kulephera kutsuka nsaluyi ndi madzi otentha kumapangitsa kuti zikhale zovuta kuchotsa fungo la masewera a polypropylene. Kuphatikiza apo, chiwopsezo cha nsalu iyi ku kuwonongeka kwa UV kumapangitsa kukhala chisankho cholakwika pamtundu uliwonse wa zovala zakunja.
Kupitilira dziko lapansi lazovala, pulasitiki ya polypropylene imagwiritsidwa ntchito masauzande ambiri osiyanasiyana. Chimodzi mwazinthu zodziwika bwino za mankhwalawa ndi kumwa mapesi; pomwe udzu udapangidwa kuchokera ku pepala, polypropylene ndiye chinthu chomwe chimakonda kugwiritsa ntchito izi. Pulasitiki imeneyi imagwiritsidwanso ntchito popanga zingwe, zilembo za zakudya, zoikamo zakudya, magalasi adzuwa, ndi matumba amitundu yosiyanasiyana.
Kodi Nsalu za Polypropylene Zimapangidwa Kuti?
China pakadali pano ndi yomwe imatumiza kunja kwambiri zinthu za polypropylene. Mu 2016, mafakitale m'dziko lino adatulutsa mapulasitiki a polypro amtengo wapatali $ 5.9 biliyoni, ndipo akuti njira iyi ikhala yokhazikika mpaka mtsogolo.
Zambiri mwazinthu izi zimapangidwanso ku Germany; dziko lino linapanga pafupifupi $2.5 biliyoni ya polypropylene mu 2016, ndipo Italy, France, Mexico, ndi Belgium nawonso ndi omwe amapanga kwambiri mankhwalawa. Mu 2016, United States idapanga $ 1.1 biliyoni pazinthu za polypro.
Wosewera wamkulu pamakampani opanga ma polypropylene padziko lonse lapansi ndi LyondellBasell. Kampaniyi imaphatikizidwa ku Netherlands, ndipo ili ndi maziko ogwirira ntchito ku Houston ndi London.
Omwe adapambana pamakampaniwa ndi Sinopec Gulu, lomwe lili ku Beijing, ndi PetroChina Gulu, lomwe lilinso ku Beijing. Opanga 10 apamwamba kwambiri amtunduwu amapanga 55 peresenti ya kuchuluka kwa polypropylene padziko lonse lapansi.
Polypropylene amapangidwa kukhala nsalu padziko lonse lapansi. Wopanga kwambiri nsalu zomalizidwa za polypro ndi China, ndipo nsalu zamtunduwu zimasokedwanso muzovala ndi mitundu ina ya nsalu ku India, Pakistan, Indonesia, ndi mayiko ena angapo.
Kodi Nsalu za Polypropylene Zimawononga Ndalama Zingati?
Nsalu ya polypropylene imayikidwa mkati mwa bedi lokwezeka la mkungudza
Popeza polypro ndi imodzi mwa mitundu yopangidwa kwambiri ya pulasitiki, nthawi zambiri imakhala yotsika mtengo kwambiri. Mafakitole ambiri osiyanasiyana amapikisana kuti atenge msika wapadziko lonse wapulasitiki, ndipo mpikisanowu umapangitsa kuti mitengo ikhale yotsika.
Komabe, nsalu ya polypropylene ikhoza kukhala yokwera mtengo. Chifukwa chachikulu cha mtengo wowonjezerekawu ndi kusowa kwa zofuna; pamene nsalu za polypropylene zomwe zimagwiritsidwa ntchito popanga zovala zamkati zotentha nthawi zambiri, kupita patsogolo kwaposachedwa pakupanga polyester kwapangitsa kuti nsalu yamtunduwu ikhale yosatha. Chifukwa chake, nsalu zamtunduwu zimawononga ndalama zambiri kwa opanga nsalu kuposa nsalu zopangira zofanana, monga poliyesitala, ndipo mtengo wowonjezerekawu umaperekedwa kwa ogula.
Ndikofunika kumveketsa, komabe, kuti mtengo wowonjezerekawu umagwira ntchito pa nsalu za polypropylene zomwe zimapangidwira kuti zikhale zobvala. Mitundu yosiyanasiyana ya nsalu za polypropylene zomwe sizoyenera kuvala zimagulitsidwa pamitengo yotsika, ndipo nthawi zambiri zimakhala zotsika mtengo. Nsalu zimenezi zimakhala ndi mitundu yosiyanasiyana komanso maonekedwe osiyanasiyana.
Kodi Pali Mitundu Yanji Yosiyanasiyana ya Nsalu za Polypropylene?
Zowonjezera zosiyanasiyana zitha kuwonjezeredwa ku polypro pomwe ili mumadzi kuti isinthe mawonekedwe azinthu izi. Kuphatikiza apo, pali mitundu iwiri ikuluikulu ya pulasitiki iyi:
• Homopolymer polypropylene: Pulasitiki ya polypro imatengedwa kuti ndi homopolymer pamene ili mu chikhalidwe chake choyambirira popanda zowonjezera. Mtundu uwu wa pulasitiki wa polypro nthawi zambiri samawoneka ngati chinthu chabwino cha nsalu.
• Copolymer polypropylene: Mitundu yambiri ya nsalu za polypropylene ndi copolymer. Mtundu uwu wa pulasitiki wa polypro umagawidwanso kukhala chipika cha copolymer polypropylene ndi copolymer polypropylene mwachisawawa. Mayunitsi a co-monomer mu mawonekedwe a block ya pulasitiki iyi amakonzedwa m'mabwalo okhazikika, koma mayunitsi a co-monomer mu mawonekedwe osasinthika amakonzedwa mwachisawawa. Chidacho kapena polypropylene mwachisawawa ndiyoyenera kugwiritsa ntchito nsalu, koma pulasitiki ya block polypro ndiyomwe imagwiritsidwa ntchito kwambiri.
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Nthawi yotumiza: May-25-2022
